Because there's something about it that most of us are familiar with and no, its not that its an ice cream truck.
This beast is the International Harvester Metro-Mite - a familiar sight around 30-40 years ago as it made deliveries of all sorts in urban areas. It was based on the International Harvester Scout frame and was targeted at large city fleet owners. The sliding doors and nearly 'standup' driving position made it a favorite of drivers.
Still don't know? It was originally powered by a British Motor Corporation "B" Series engine. Yes, the "B" Series that can be found in numerous British sports cars, saloons and light trucks.
I imagine that something this big powered by a 1,500CC four cylinder engine would be a bit pokey.