Caltrain's electric trains are a hit with riders. The electrification project involved swapping out Caltrain's Diesel trains for brand new electric units that are quieter, accelerate faster, and are more comfortable.
While their top speed is the same, the acceleration allows for more frequent stops while simultaneously reducing route times. The train can now go between San Jose and San Francisco in less than an hour. Unlike BART it also has restrooms and 2nd floor with a nice view.
If you haven't tried out the new service yet, now's a great time to see the latest and greatest in Bay Area public transit.