suntubi

I have a troubleshooting question on my 420. After bringing it out on the road after laying it up for the winter, I started the car and idled it for 20 minutes in my driveway. All systems OK. Then after 2 miles into a test drive, the car sputters and within 100 yards simply cuts out. I could start the car but it would not stay running for more than 1 second or so. The car has fresh gasoline and a new fuel filter installed before the test drive.

Any ideas on what is going on here?