I've invented a new feature for car stereos to improve convenience and safety! I'm willing to license it to auto and car stereo makers for a very low per-unit royalty.
Instead of having to navigate through menus or use a touchscreen to select one of your favorite radio/satellite stations, the stereo will have a plurality of PHYSICAL BUTTONS, each of which, upon being pressed, tunes to a user-selected station.
In the preferred embodiment, there will be six such buttons in a horizontal row.