I think that this suggestion is a bit more extreme than what you’re hoping for but the Carice tc2 is an all electric car with all the extras and features of a car from the 1960’s

If youre not familiar with the artist they make a comic strip featuring that witch and her cat called Pepper and Carrot. He posts the comic for free on his artwork site.

It works with wine. I expect it would work with proton too.

Maybe they didnt see your comment? Try asking them again.