Fix CarRacing termination

[araffin]

Description

Fix CarRacing termination (both reaching end of lap and treating it not like a failure).

See #2525 (comment)

EDIT: need to be merged after #2888

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Screenshots

Please attach before and after screenshots of the change if applicable.

Checklist:

• I have run the pre-commit checks with pre-commit run --all-files (see CONTRIBUTING.md instructions to set it up)
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[pseudo-rnd-thoughts]

How long has this bug been in the environment? Does this need a version bump just in case?

[araffin]

How long has this bug been in the environment? Does this need a version bump just in case?

The timeout not treated properly? forever...
The other one, since #2888 (actually #2888 was supposed to fix two things, but only fixed one).

Does this need a version bump just in case?

Probably yes. (the models trained on previous versions will still work on that one, and the other way around though)

[pseudo-rnd-thoughts]

@araffin Would you be able to make the version bump and add a comment to the version info in the docstring

[araffin]

Would you be able to make the version bump and add a comment to the version info in the docstring

Where exactly should I do that?
(it will probably be faster if you do it directly and push the commit to my PR ;))

[pseudo-rnd-thoughts]

As Im not the owner, I can't push to PRs
On

gym/gym/envs/box2d/car_racing.py

Line 143 in 3e37382

### Version History

you need to add a new version with the changes you have made
and

gym/gym/envs/__init__.py

Line 86 in 3e37382

id="CarRacing-v1",

this to v2

[araffin]

This has been merged before the version bump...