How to make Car Exhaust Smoke?

Hello everyone, I am working on a Mobile vehicle driving game, and I need to make car exhaust smoke especially for larger vehicles like trucks. I want to have something like this;

Example image

But, when vehicle is going fast, the particles should stay behind, and when it's slower, particles should be forming closer to exhaust. Particles having a velocity of zero might work.

I am also wishing to add exhaust smoke on smaller cars, they will be less intense, smaller and whiter.

I didn't work on particles before, what can you suggest that would be performant and easy to implement? Thanks.