How have vehicles changed for the past 50 years?

How much hp does 450 dozer have? How much does and f-14 tomcat fighter jet cost? What were the most famous World War 2 vehicles? When was a Spitfire last flown? How many wheels does the Antonov An-124 Mriya have? What is the portion of the airfield where aircraft and helicopters are parked? What is the full name of an Apache helicopter? What is the airplane that hovers like a helicopter? Did the B-29 bomber have a belly gun turret? What countries still produce and export landmines? What was the name of the first fighter? Do supertankers have propellers? How fast can a spitfire fire? How fast is a F 15E Strike Eagle fighter jet? How much does a fighter jet f-15 cost? How fast can the Lancaster bomber fly? How high can the f14 go? What new organization provided clerical workers truck drivers instructors and lab technicians for U.S. Army? Where can one find images of an M38A1? How fast can a surface to air missile go?