Quote:
Originally Posted by thenewsavman
400km is not a long haul by any stretch.
Even if it were, and it isn't, you're saying that the Tesla Semi is going to get the ~the same range as a Model S. My back of the envelope calculations go something like this:
[envelope]
Model S is about 2000kg and the battery costs a lot, like a whole lot;
A semi in the US weighs in at 36000kg on the reg, I'm only on a 32 bit machine here so I'm just going to ball park the number of kwh a battery capable of getting the same range would need at a ****-tonne.
[/envelope]
A modern diesel semi come with ~240 gallon tanks at ~8 mpg. In round numbers that's 2000 miles or 3200 kilometers. Almost an order of magnitude greater range. That's long haul.
And it only costs like 150k or so for the whole machine.
A Powerwall today costs about $400/kwh. That's what I can actually buy a battery for from Tesla. I'll let you do the math, but if you multiply $400 times (a metric ****-tonne of kwh) then you are going to get a large number for a machine that hopefully can travel like 3.5 hrs without stopping.
I just don't see it.
And we haven't even talked about reduced cargo capacity b/c the weight of this ginormous battery is >>> two 120 gallon loaded aluminum diesel tanks.
eta: and even if 8 mpg is optimistic it's not like the calculus changes at 6 or 7 mpg.
First of all, I am not talking about the US and while it's large and matters it it's not the only place that matters.
Where I live and every surrounding country, there is a regulatory requirement to take breaks. You cannot drive more than 8 hours a day. It is completely meaningless if you could drive more than that because you are simply not allowed to. There is also a necessity for in between breaks (1 hour for an 8 hour day). This is where my 320km requirement came from.
The fact that current trucks can have more in their tanks is completely irrelevant.
Secondly, total cost of ownership goes way beyond the mileage. Trucks have notoriously high upkeep at the moment and (as BS indicated) if it was possible to reduce those costs and thus lower total cost of ownership, people would be willing to compromise.
Thirdly, it doesn't matter to the trucking company when you take your breaks. If you have to fill up every 250km and take a break and thus drive 12 hours in total they don't care (as long as they have people willing to drive trucks which is the way tougher challenge).
Arguing against electric trucks is really stupid. The business is not just long haul 2500km drives. It is mostly the opposite where trucks drive for shorter distances and carry cargo that needs to be driven from a port to a warehouse e.g.