Brute

From Grand Theft Wiki

Brute is an automobile manufacturer in Grand Theft Auto IV. It may be based off GMC, as GMC makes medium to heavy-duty trucks and chassis. The Brute Ambulance looks similar to the Declasse Burrito, implying that Brute and Declasse are corporate cousins, much like Chevrolet (which Declasse is based) and GMC.

Vehicles

• 8000 Stockade (includes the Enforcer, Police Stockade, and Securicar)
• Ambulance
• Boxville
• Bus
• Pony

Although no brand name is visible on the Mr. Tasty, it can be presumed that this vehicle is manufactured by Brute as it's basically a smaller Boxville.