The Price Floor is a minimum price set for selling items on ROBLOX, which was introduced on September 24, 2013. Along with the Outlines update, the price floor update was heavily criticized by the community upon its release. Prior to this update, the minimum price of T-shirts, Shirts and Pants was 1 and 5.
This system was first introduced in the CitroÃ«n SM in 1970, and was known as 'VariPower' in the UK and 'SpeedFeel' in the U.S. In the late 1960s, General Motors offered a variable-ratio power steering system as an option on Pontiac and other vehicles.
The basic braking system we have today was pretty much in place by 1921, including a refinement some regard as contemporary -- power assist. Power assist, technically, dates back to 1903 when a car called the Tincher used air brakes. But the first car to be equipped with a vacuum-operated power booster similar to those we have today was the 1928 Pierce-Arrow. It used vacuum from the inlet manifold to reduce the physical effort needed to apply brakes.