Golden is so small that you don't absolutely need a car especially if you are staying in the proximity of the centre. The town is divided by a river and each side has a supermarket IGA on the north, Overwaitea on the south which makes it easy to get the necessities by foot.
Mount 7 Taxi +1 250 344 5237 is open 24 hours - a trip across town will probably cost you $10-15, up to Kicking Horse is likely around $30-40.
During the winter months, Kicking Horse Resort runs a Snow Shuttle $6/trip as of Feb 2007 - daily, weekly, monthly passes are available which runs every 2 hours or so. The Snow Shuttle does a route going around town, up along the strip on the highway Transcanada 1 and up to the mountain.
Of course the easiest thing is to have a car, especially if you want to explore. There is a National Car & Truck Rental, 915 11th Ave S, +1 250 344 9899, in town, however, their fleet is very limited. There may also be some in nearby towns Kamloops, Revelstoke, Canmore, Invermere. Otherwise Calgary would be a good bet.
