adv. (participle) to operate a manual vehicle in a gear lower than the current speed requires, usually for prolonged periods, often as a result of driver inattention and with little regard for fuel efficiency; this practice was once justified by namesake with the assertion that one can "go faster" in a lower gear. (2000ish-d.f. < jenandryanism orig. in reference to Ivan driving 100+ miles in fourth gear when fifth gear would have been the better choice, dri-vin-eye-vin.)
Ryan: We've been in fourth gear at 65mph for the last 20 minutes...
Jen: I guess we're just drivin' Ivan!
(Ivan: In fourth gear, we go faster.)