Dear (circle one):
BMW,
Lexus,
Mercedes,
Other Owner.

I am truly sorry for what happened on the road today. I did not see you next to me at that light. If I had I would have eased off the gas a little when the light changed. I did not mean to cause you any embarrassment in front of your (circle one): Wife, Young Girlfriend, Secretary, Other. I realize you spent a great deal of money on your car and the last thing you need is some guy in a VW Passat to leave you behind like that. If I see you again on the road I will be sure to let up on the gas and let you pass me.
Sincerely,
Your Name Here