According to Fred Olen Ray, Heather Thomas was without a doubt the toughest person he'd ever had to work with at that point. He said she was demanding and unnecessarily cruel to the cast and crew. She also went on talk shows saying she worked for the movie for "peanuts," even though she was paid $20,000 to only work for three weeks. Ray said he finally pulled her aside one day and told her, "If you don't do exactly what I tell you, I'm going to put on the widest fish eye lens on the camera for all your close ups and you're going to look like a monkey looking into a Christmas tree bulb." She behaved after that.
During a 1990 interview, Fred Olen Ray said Heather Thomas didn't like her co-star Ashley Ferrara. One Sunday night, when stores are closed in California, Thomas demanded a pair of $50-a-pair, Tatk One jeans by the next morning or she wouldn't come out of her motor home. Ray found out Ferrara had a pair of those jeans, and she was kind enough to give them to him for Thomas to wear for the entire shoot. They bought Ferrara a brand new pair the next day when stores opened and never told Thomas because she would have been furious if she found out she was wearing Ferrara's jeans.
Fred Olen Ray originally wrote a script for Linda Blair to star called Cycle Warrior, but Blair passed on it saying she wanted to go make comedies. Heather Thomas was cast instead and the title was changed to Cyclone.
Russ Tamblyn in an uncredited role as the government supervisor who finds the two knuckleheads in the "govt surveillance ford"
The motor started developing hydrogen powered vehicles from the mid-90's. Cyclone predates this technology by a few years. Seminal film to the insiders of the motor industry.