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Campaigning with electric cars.
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pondlife1736 View Drop Down
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    Posted: 29 Nov 18 at 5:49pm
[[/QUOTE]

Hydrogen is here already as I get to drive one at work. I also know the Met have just bought 20 of them after I spoke to one at the filling station. Fill up is similar to petrol and real use range is about 250 miles. The big issue with hydrogen is producing it which is currently an inefficient energy conversion process and brings other issues if reforming is used. The efficiency issue will undoubtedly get better and hydrogen will be a realistic alternative.

Visit the M25 Cobham services if you want to see a hydrogen station.[/QUOTE]

Hydrogen is just about the worst transport fuel you could imagine. You can't practically liquify it so need enormous pressure to compress enough of it into a sensible tank size for a useful range. Quite apart from the cost and complexity of the tank, the energy required to compress it to that degree is greater than you ever get out. No amount of technology development can overcome these fundamentals.
Added to that is the difficulty of keeping it in place; hydrogen tends to leak from conventional seals.
If it was such a great fuel, we'd be burning it in combustion engined cars by now.
Hydrogen is one of the main reasons the auto industry abandoned the fuel cell as viable for mainstream passenger cars, 20+ years ago.
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Rupert View Drop Down
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Posts: 8956 		Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 6:51pm
Just use the hydrogen to both lift and power the car. Problem solved.
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Chris 249 View Drop Down
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Posts: 2041 		Post Options Post Options   Quote Chris 249 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 8:24pm
Originally posted by PeterG

I think the same argument applies to cars as well as boats. The takeup of shared autonomous cars is going to be way slower than enthusiasts suggest, because a lot of people (particularly those who don't live in inner cities) find owning one incredibly useful. and like having their own car. No one who commutes in a car will end up using a car call service. Nor probably those who do a daily school run, etc. There simply won't ever be enough around to get you there when you need to. Car and boat ownership will outlast most or all of us here.

There's got to be a chance that people will be more interested in owning their own autonomous car than owning their own conventional car, surely. After all, when you're driving your senses and brain are (hopefully) largely occupied with driving itself so your perception is largely on the outside of the car.

With autonomous cars, your attention will turn inwards. If I was driving to a regatta I'd like a nice comfortable bed, a few random books, my own food and drink in a small fridge, and a few tools for the repairs I normally do before a race. Embarrassed   Moving all that stuff, and the sort of stuff that other people will want to occupy their time in an autonomous car, will be too hard to make a car service the preferred option for many of us.
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Emilio Castelli View Drop Down
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Posts: 20 		Post Options Post Options   Quote Emilio Castelli Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 9:43pm
Originally posted by maxibuddah

just like there's no need for vinyl or CDs with Spotify and the like, but they still buy them.
Do you have ears?
E
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maxibuddah View Drop Down
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Posts: 1760 		Post Options Post Options   Quote maxibuddah Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 10:24pm
Originally posted by Emilio Castelli

Originally posted by maxibuddah

just like there's no need for vinyl or CDs with Spotify and the like, but they still buy them.
Do you have ears?
E

Pardon?
Everything I say is my opinion, honest
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423zero View Drop Down
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Posts: 3420 		Post Options Post Options   Quote 423zero Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 10:28pm
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Emilio Castelli View Drop Down
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Posts: 20 		Post Options Post Options   Quote Emilio Castelli Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 10:42pm
Originally posted by maxibuddah

Originally posted by Emilio Castelli

Originally posted by maxibuddah

just like there's no need for vinyl or CDs with Spotify and the like, but they still buy them.
Do you have ears?
E

Pardon?
If you actually listen to music you would quickly notice there is no comparison in quality between streaming and vinyl/CD.
E
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pondlife1736 View Drop Down
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Posts: 106 		Post Options Post Options   Quote pondlife1736 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 10:46pm
Hi Fi Nazi alert!!  LOL
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423zero View Drop Down
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Posts: 3420 		Post Options Post Options   Quote 423zero Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 10:59pm
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Sam.Spoons View Drop Down
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Posts: 3401 		Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 18 at 11:33pm
Originally posted by Emilio Castelli

Originally posted by maxibuddah

Originally posted by Emilio Castelli

Originally posted by maxibuddah

just like there's no need for vinyl or CDs with Spotify and the like, but they still buy them.
Do you have ears?
E

Pardon?
If you actually listen to music you would quickly notice there is no comparison in quality between streaming and vinyl/CD.
E

And, by the same token, there is no comparison between vinyl and CD either. But you can only tell CD is best if you listen to it on a decent system. Streaming is usually pretty cr*p (even DAB broadcasts are often poor) but the source material most listen to is mastered with streaming in mind and if you're listening on a laptop or phone you have no chance of hearing the difference anyway.
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