[KSUViolet06]

Insomnia is a serious sleep disorder and he should see a doctor about it. You cannot "fix" or "cure" it.

He may have agreed to drive you to work everyday, but it seems like his lack of sleep is making it difficult for him to do that. There's nothing he can do about it if he has a sleep problem that he's not receiving treatment for.

Since the arrangement is causing you to be late every day, you need to find some more reliable transportation to work (the bus, another co-worker, etc).

Yes he might have agreed to it, but it's not working, and I'm sure you wouldn't want his sleep issues to cause you get written up or fired.