Well, there's this really cool game called, "Friday Night Shopping At Tesco Simulator"?
It allows you to go around with a trolly, and on some missions you have to try and dodge the old grannies on their mobility scooters? Its great fun, trust me, VERY realistic, like real life
Jack
p.s. its an 18 since it contains images of grannies running people over on their mobility scooters
(This is a joke by the way
)