Are Mormons people that ride bikes all the time cause they don't believe in cars?
No, they don't ride the bikes because they don't believe in
cars. They do drive cars, my friend is a mormon. They only ride
bikes after they get out of college and they go door to door on
bikes for what is called "missionary work" to get people to try and
convert to being a mormon. You're probably thinking of the Amish
who often eschew motorized transportation.