Metrolink's going to be facing a challange similar to this very soon. Rising gas prices are making more people use the train. The number of bike commuters are still very small, but with room for only 2-4 bikes per car (depending on how you organize them), things are going to get crowded very quickly.

There's plans to start adding an extra car to the busiest trains but that still only means room for acouple bikes. I really do wish they'd have just one car where half the lower level was just open space for bikes and other large luggage items (since alot of people use Metrolink to get to and from LAX). Then have folding seats for use during those times when there aren't many bikes or luggage around.