VIDEO: Is this the best way to get home from the pub?

THIS could be the most practical reason to have a child.

Apparently filmed in the British town of Bognor Regis, the footage -- which has now been viewed thousands of times on Facebook -- appears to show a smart-thinking Dad treating his young son as a taxi.

Those on the Bognor Regis forum on Facebook, where the video was first posted, asked if the dad wasn't putting his son at risk.

Of course not, said others.

It's understood the father and son due are both model train enthusiasts and the dad is holding override controls.