> How do you use your sense of smell to help you drive?

I smell smoke before I see it. Useful if there's a forest fire up ahead.

Burning rubber or smoke from the engine is an indicator of a mechanical issue.

> you can't drive with only lidar.

Nobody said you could. This is a strawman.

Tesla stans are the only ones trying to convince everyone you can only drive with cameras. Everyone else is pretty united on the usefulness of multiple inputs.