This is mostly valuable to us Swedes who live in Gothenburg and around, but I'll take it in English anyway.
At vasttrafik.se, Västtrafik has a great autocompletion mechanism that uses AJAX to find the stops you are interested in while planning to travel. However, they haven't included the attribute to turn off your browser's own autocompletion mechanism.
Get it here:
Disable autocompletion on vasttrafik.se