First of all, thank you for your suggestion ?
I don't think the idea is bad at all, but ...
I think since we already have 3 vehicles to choose from and the new one every month, that's a change.
I don't know how difficult it is to change vehicles every month, but there will certainly be a lot of work behind it.
We as Patreon have the Skoda and then 2 other vehicles to choose from every month. Sometimes cars, sometimes buses, sometimes smaller trucks, sometimes vans and so on.
So I would leave it that way so as not to give the team more work if you know what I mean.
This is just my opinion and shouldn't discriminate against anyone!
Stay healthy!
Kind regards
Tximx