I wish overhead (cut away to passenger layout) and side scale drawings of all cars existed. That way you could directly compare the vehicles. You'd think such information would be needed (in the U.S.) by the NTSB; and, thus, be freely available.
That’s obviously the people who are really using it, but I assumed you had to pay Apple to get it.
So either you made your own measurements or if you were doing Made For iPhone and they would give it to you as part of that program which surely you must have to pay for.