Would this sidewall construction work?

I’ve been hanging out for several weeks and really enjoy the forum. Mike, thanks, it’s a great site.
I’m not sure I’ll ever build a tear, but if I do it will be to support a couple of empty nesters on their summer travels around the country being pulled by some high MPG, maybe convertible small car. Probably not the Vibe we have now, not really a road car, but maybe a Z-3 or something similar. Anyway, small and light will be the name of the game.
I’m curious what the experts would think about using ½ or ¾ plywood as a core for a set of insulated walls. Rather than stick-frame the core, cut out the ply and replace with foam where strength isn’t needed. If hardwood were needed at the rear and door hinges a piece could be let in with a tongue and groove. Same on the top edge to attach the roof.
Looks like the plywood would be a lot cheaper than poplar anyway and a lot faster.
Just musing…
I’m not sure I’ll ever build a tear, but if I do it will be to support a couple of empty nesters on their summer travels around the country being pulled by some high MPG, maybe convertible small car. Probably not the Vibe we have now, not really a road car, but maybe a Z-3 or something similar. Anyway, small and light will be the name of the game.
I’m curious what the experts would think about using ½ or ¾ plywood as a core for a set of insulated walls. Rather than stick-frame the core, cut out the ply and replace with foam where strength isn’t needed. If hardwood were needed at the rear and door hinges a piece could be let in with a tongue and groove. Same on the top edge to attach the roof.
Looks like the plywood would be a lot cheaper than poplar anyway and a lot faster.
Just musing…
