The smell of Old Spice in the car was thick enough to float the boat on the bottle.

FORBES: Fact and Comment

To Henry Cao, who was seated beside a window in the last compartment of the second car, the train seemed to float, describing long elegant turns and shuddering now and then with the whump of a train going in the opposite direction.

NEWYORKER: Boss Rail

Using a trickle or "float" charger, often called a battery maintainer, would keep the car's battery charged automatically while it sits.

WSJ: Seeking the End of a Starter Problem