I got home from work and decided to take "baby boo" out for a romp. She started up normally (electric choke, 32/36 weber) and was idling normally (after kicking down the choke) when she suddenly cuts off (no sputtering or change in idle speed-just stopped like someone turned off the ignition. "Oh well, (I sez to myself), it is getting a little cooler. Maybe I didn't let it run on full choke long enough" Start the car again, leaving it at full choke, and again she bails out after about 30 seconds. It re-starts easily, idles nomally, and cuts out again after less than a minute. By now, it's getting late, and I don't have time to pop the hood. Any suggestions. I should say that the car has run like a race horse all summer, so this is pretty unexpected. New fuel filter since about a month ago. Maybe electrical?