The current USPS trucks have a slanted back too but my google-fu yielded no results. The info graphic explains some of the other details: https://www.nytimes.co

The current USPS trucks have a slanted back too but my google-fu yielded no results. The info graphic explains some of the other details: https://www.nytimes.com/2015/03/06/automobiles/the-mail-truck-is-a-classic-and-thats-a-problem-for-a-modern-post-office.html https://www.nytimes.com/2015/03/06/automobiles/the-mail-truc... Biggest change is that driver should be able to walk inside it to fetch packages, hence the height and the odd 'forehead'.