That's not a typo - The Big Dump's strength really is80out of 5.
There are a number of trailer and towing companies globally named TowMaster.
Looking at the name, "Meister" means "Master" in German.
The Towmeister reappears in TDR 2000, driven by Hugh Jorgen.
Pitbull owns a Weimaraner dog named Lily, and loves it very much - there are two photos and one drawing of her in the Towmeister's cabin.
As this is a genuine photograph, the dog could be the pet of a member of Stainless Games. It is most likely to belong to Neil 'Nobby' Barnden, who was the Lead Artist on Carmageddon: You could see pictures of a similar looking dog (called Lotte) on His old website.
The Big Dump doesn't leave a pool of oil on the ground when wasted. This attribute is shared with the Loggerhead.
In Carmageddon: Reincarnations Pre-Alpha, Nobby is representing Psycho Pitbull in the mugshot.
In the intro of the first game, the vehicle's look seemed more menacing. It had no split front window and had a larger bumper. Also, no number is present on the engine hood. (image may not display that part, but the car's hood can be found in the intro without a number).