A top-hinged flap with a slight circular depression. Flip up the flap, emplace drink, do whatever it is you were going to do. If you forget, the "Filler Cap Ajar" light reminds you when you go to drive off.

Cigar lighter/ashtray companion piece sold separately.
-- FlyingToaster, Sep 29 2016

It's amazing that your civilization has managed to survive as long as it has without this truly vital innovation.
-- 8th of 7, Sep 29 2016



random, halfbakery