"High-end" vehicle, hanging in the left lane, running under the speed limit.........at a minimum, the officer was probably running your plate. If anything out of the ordinary would show up from that (plates don't match the vehicle, suspended driver's license, outstanding warrant, etc.), it gives the officer probable cause to pull you over and check things out. That's how a number of drug-related arrests occur - you fit a profile!
JMHO -
Bill
