As a professional. a little to left a little to d right. if u lik d ways his driving apart from d lateness. writ d appraisal in his favor. then reduce that much closeness wit him.discussion strictly on business. among others. talk to him.

kowema:
Report the true state of things to management, how ever, tell them to give you another 3 months to help him work on his character development as you think he would improve.
That's now to say the truth but with remorse.

Call ur driver to let him know that he has put you in a tight corner and let him know he has just 90 days to fix himself.
I know that feeling

Sis...please where do you work? Will like to work in same place with you.

I respect other's opinion seeking you to pad, forgive and the rest. "Humanely", they are right.
But..... as a management consultant, this is my opinion.
He will never change. He can only pretend to keep his job. He doesn't value the job neither does he "feel" motivated enough. He doesn't even like working for you or accepts to respect you as his boss.
If you keep him, be prepared to bear all the consequences........

best advice

kowema:
Report the true state of things to management, how ever, tell them to give you another 3 months to help him work on his character development as you think he would improve.
That's now to say the truth but with remorse.

Call ur driver to let him know that he has put you in a tight corner and let him know he has just 90 days to fix himself.
I know that feeling