that's right: SF to SJ in under 60 minutes.
they'll be running at peak hours (i.e.: rush hour) and making several stops en route from SF to SJ:
For proportion for those of you who take Caltrain: from Mountain View to SF, via the faster of the expresses currently, takes exactly an hour, per their schedule. Continuing through to San Jose racks that one up to 1.5 hours, making for 2/3rds the time. 2/3 of 1 hour = 40 minutes.
Not a huge time savings, but good heavens, I may no longer have to cut out of work early to get to an 8 PM dinner engagement!