A motorist driving an old-style black Volvo was in an accident with a man on a sit-down lawnmower.
The crash happened at South Cliff Caravan Park, near the A165, in Wilsthorpe, Bridlington, at about 3.23pm on Tuesday.
Police believe the car would have been damaged and would like to speak to the driver about what happened.
The driver of the lawnmower was not injured in the crash, but was "considerably shaken up".
Humberside Police are appealing for witnesses, or anyone with information about the incident, to call them on 101.
