For those who have an Instagram account ( i don't and won't , so i can't see everything ) , there is someone who imagined some non-existing versions of cars . Some look funny but some do look like they wouldn't be a bad idea at all..

https://www.instagram.com/jlord8/?utm_source=ig_embed&ig_rid=64647388-69f4-4045-960c-63fae245d70d

( found the link on another website while looking for old Matchbox cars )