I actually may do it, I did have a clear idea of what tainted car would be....but my initial idea of what normal Car would be was also way bigger. Like I wanted a "style points" system that graded you per floor based on stuff you did....so I may actually pour some of my original ideasa for Car into the the tainted version.
My original idea for the tainted involved shaders, it was basically car but freecam mode(even on small rooms) and the camera would rotate based on where the car is facing...I got pretty far into it, but seeing how problematic shaders are for low-end systems(I literally had to remove a shader to avoid blackscreens for some) I'd say that idea is out of question.
My current take on tainted is a car that controls the same as this one but crashing on walls with no rooms result in a red room being created....BUT it introduces a fuel system based on blood "blood is fuel" basically, where you have to consistently kill enemies to stay alive and killing stuff in different ways gives you more or less blood, the size of the monsters also matters. The tainted car would be a little weaker and not all monsters would die in one hit, some would be pushed back into a wall like 2-3 times until they die (mainly bosses and chunky enemies).

tl;dr: yes I may eventually add a tainted version, it's not guaranteed but I do want to do it.

That actually sounds like a pretty cool concept, it would give you a reason to actually kill enemies instead of just rushing to the boss.

yea, thats basically what I want....there would also be style points for moving into varied shapes and in varied ways, preventing you from just spinning around waiting for the monsters to come, which is something some people do and I find pretty boring.

I do like the idea of freecam shaders, is there any way of that being possible for people with higher end pc's?

You dont even need shaders for freecam, its actually supported by the game, you need the shaders for the rotation however. Then again, while its a shame, I have no interest in making mods exclusively for high end.

btw, for anyone still curious, tainted car is happening...it wont be anything mindblowing or funny, it will just be what I actually had planned from the start and didnt have time to do in april fools....minus the red room thing, because in practice it's pretty boring....I may leave it as an option tho.

i have an idea for tainted car: being able to lose friction at will for more style points at the cost of more risk, maybe an active item

Tainted car is already pretty much set in stone btw. Style points are still a maybe however, it is something I want to add but not as a gameplay element but as a bonus for fun.
I wont spoil the details but tainted car is pretty much car, but faster and needs fuel.

So, Carmaggedon. In Isaac.

NICE

Never played carmageddon but, yea? sort of?

ultrakill reference pog

If I manage to put "Blood is Fuel" anywhere you can count on it appearing, lol
In fact, I will probably put it in the character select screen, yea, I can totally shove it in there.

Btw, sorry if Tainted Car is taking a ♥♥♥♥♥♥♥ of time, I have been sidetracking a lot with stupid ♥♥♥♥ I ended up scrapping and I also have been a lot more busy with work lately....but tainted Car will eventually get out there, sooner than later, alonside some improvements to the normal Car too.

"Blood is Fuel"
"Hotwheels"

now make it rusty

bike

I can say, 100%, it wont be a bike or any other kind of vehicle