I would think that all you would have to do is get a junker that has a sunroof, a ton of marine epoxy to seal the cab and away you go. If you really try this take pics from start to finish. Maybe put a sump for filtration in the hood with all the other hardware needed. Is this going to be an inside car aquarium?

or even an inside car! yep, i would say a sunroof would be necessary for water changes. remove fuse box and battery??? or, could you wire all the things you need to the existing one?

pretty wild! wonder who would be driving. i can see that goby now.

No one can drive the car. It seem to be the entire inside of the car is filled with water and is currently a fish tank. OH MY GOD!!!