Take a look at this:
Semi Truck TrailerTail® Fuedeliveryings Technology | STEMCO
evenould also say "try airtabs" to general sneering..... ;-) but the bus seems to be right size.
Btw, isn't it a quite a leap, from van to this? One needs to think differently, drive differently.
(question is: by heart, are you bus driver, or van driver? in my country vans are used for fast delivery and their drivers behave accordingly - even off-duty.)