Toddler plastic ride on motorbike (Catford SE6)

Hello all. I'm looking for a plastic motorbike for my 2-year-old son. He keeps riding his brother's fire engine toy which isn't made for this, and he's really annoying his older brother. It doesn't have to look pretty, but just functional and not broken. I've added a photo of the kind of thing I'm looking for. These are usually the kind of thing that people leave out on pavements because kids have outgrown them. But I haven't spotted any, and it's probably the wrong time of year to be doing garden spring cleans...