What is the difference between motorcross from now and then?

What is the best size dirt bike for a small 7 year old? How many 11-87 Premier Dale Earnhardt Sr. Tribute 20 gauge shotguns did Remington produce? Is Lewis Hamilton a hero or villain? How many NASCAR race tracks have lights? In what city is the NASCAR Hall of Fame located? How many fans at the Daytona 500? Can insurance companies see your driving record? Who was the first person to win the Nascar Cup Series championship? Which driver drove the number 27 Kodiak Pontiac in 1989? How do you go fast in a drag race? What hubcap has 2 lions and a shield go on? How lenient is Michigan International Speedway about cooler size? What form of transport had a network system of over 200 miles by 1830 but become uneconomic with the arrival of the railways? Is pit stop and pitstop have the same meaning? How you became rally driver? What is the NASCAR track in California? You want to modify your Honda stunner could anybody tell mehow what should you modify in dat? What is Mark Martin's salary? Why does the steering wheel come off of a race car? Is formula 1 the biggest spectator sport in the world?