In Canada, a "drive by" involves stopping and helping a disabled person, then posting a video of it to the internet encouraging others to do the same.

Maybe if you recall that amazing pay it forward chain that happened not to long ago at a Tim Hortons, or that time those old men sang a charming acapella version of 'Can You Feel the Love Tonight' at a Tim Hortons, you would have expected a Canadian drive by to be something like this. Although we will admit we were a bit surprised it didn't happen at a Tim Hortons. Way to keep us on our toes, Canada.