Come up with a question and reasoning that would justify this answer: 1280

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The question is: Dale owns 4 sports cars. The red one can travel at twice the speed of the green one, but the green one can travel at 8 times the speed of the blue one. The yellow one is broken and cannot move at all. If the blue one can travel at a speed of 80 miles per hour, at what speed, in miles per hour, can the red car travel?
Step-by-step reasoning process: If the blue car can travel at 80 mph, then the green one can travel at 8 * 80 = 640 mph. If the green car can travel at 640 mph, then the red can travel at 2 * 640 = 1280 mph.
