1994 Sl600 won't start

[clayfood123]

I am new here but have been reading a lot of post trying to figure out my problem. Here is a brief outline of my problem. The other day I was going to pick up my daughter and was on the open road (55 mph). The car shut off, slowed down but started back up. 15 minutes later the car shuts off, slows down and starts back up. I never came to a complete stop. 10-15 minutes later...the same thing. Understand, I am worried because several people told me I did not need nor could I afford a SL600. After I picked up my daughter the car ran fine for the next 50 miles. This afternoon (a week later) I go to start the car, it starts but runs terrible for about 10 seconds and then it cuts off. I try 4-5 times to start but no success. The car turns over fine but no attempt at starting. Hope someone has good news for me. Thanks in advance.