Because of the frequency of Husband's trips, we are in possession of a small fleet of both buses and taxis and are fully capable of recreating a mini-traffic jam (oh, we also recently added a Mini Cooper to our mix, for the record) on our own living room floor. Like this one.
Apparently little British boys & girls are far more reserved with their toy cars, or the "choking hazard" laws aren't quite as stringent there because Ethan's taxis and buses are forever having wheels pop out or, as is the case in the picture above, headlights breaking right off. Which led Ethan to learning his favorite word--padiddle. Who can blame him? It's a fun word. And you should be able to have some fun when you're sitting in traffic.