Within seconds we were in the street and Tristan was roaring off in a cloud of exhaust smoke.

Bald tires, blue exhaust smoke and questionable brakes have no place in modern society.

"I'll keep an eye open for you," he promised, and waved to her as she pulled away in a cloud of exhaust smoke.

They did, however, have the worst diving abilities of the three designs, and produced excessive exhaust smoke.

Visible exhaust smoke is particulate matter, but it's not only carbon.

The cold air filled with exhaust smoke.

Blue exhaust smoke may be indicative of oil burning.

The police driver leaves the engine running and our exhaust smoke drifts into the air to one side on a chilly breeze.

Ahead, a blast of exhaust smoke told the pursuers that the thief was tromping on the gas.

They arrived from four different directions on those huge yellow buses belching blue exhaust smoke.