pootle
To wander or ramble in a leisurely, indirect, or aimless manner, such as by walking or driving.
informal
Prince William, in a surprise break from the schedule, borrowed his father's 41-year-old open-topped Aston Martin to pootle down the Mall to Clarence House with his new bride.
Where it comes from
Apparently an alteration of poodle, from German Low German Pudel, from the onomatopoeic term pudeln (“to splash about”) by its merging with tootle. Alternatively, a blending of doodle (to draw aimlessly) with potter (to move aimlessly)—as reported by 1970s English visitors to Australia.
Adapted from the Wiktionary entry pootle (CC BY-SA 4.0).