That's not a typo - The Big Dump's strength really is 80 out 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 former Stainless Software employee. It is most likey 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 (now down).
The Big Dump doesn't leave a pool of oil on the ground when wasted. This attribute is shared with the Loggerhead.