Not stupid. The problem with most full sized vans is the ac compressor is run off a belt. Not totally insane would be add a second compressor and a three way valve. I've never heard of someone doing that. It's more common to use a RV rooftop AC unit.
Some newer passengers cars and maybe some vans use electric motors to drive the compressor. And EV's tend do that as well. In the EV case no mods are probably needed. Electric vans though are just becoming a thing and have low range and high price tag.
Some newer passengers cars and maybe some vans use electric motors to drive the compressor. And EV's tend do that as well. In the EV case no mods are probably needed. Electric vans though are just becoming a thing and have low range and high price tag.