Did you read all of what I wrote? Tesla is already introducing a 220-volt charger to cut charge time from 8 hours to 4 hours. Although I certainly suspect that the batteries would have to be configured to take faster charging.
Your question is not totally ridiculous, although I don’t think the charging time is just a function of the voltage used. I suspect that the time required at 110 or 220 volts is related to the maximum current that can be provided at those voltages. I believe the Tesla uses lithium-ion batteries and, at least in the RC hobbyist world, these are generally considered to be able to be charged safely in a minimum of one hour. I don’t know if charging at that rate affects the lifespan of the battery. Those are also small batteries, typically of a few Amp-hours capacity at most. OTOH, let’s take a 1,000 A-h battery - to charge it in an hour would require a current of 1,000 Amps. That’s a lot of current, which would require pretty big conductors.