Question regarding cars and global warming. Answer because I don't understand.?

Question

If cars release CO2 into the atmosphere and that is causing global warming, then aren't cars simultaneously lessening global warming because they release ozone which keeps the sun coming in? The heat might be being absorbed by parts on the planet, but isn't the ozone created by cars keeping the sun from coming in. Forgive if I sound ignorant. I just do not get it.

Answer 1

what J S said.

Answer 2

the ozone created by cars does not easily make it up to the upper atmosphere where it can help block the sun's rays. That ozone mostly stays low to the ground causing pollution, acid rain, etc.