[gav]

It's about 40mins from Penn to JFK via the LIRR/Airtrain (to go maybe 20 miles). There's about 6 trains/hour. I really don't see how you'd get this journey down to 15 minutes without having to build a new tunnel all the way, it's never going to happen.

The real annoyance is how hard it is to get to LGA and that you're reliant on buses. It's a shame that they ran out of money building the N/R and it stops at Ditmars instead of continuing on to the airport.

I fly out of NYC biweekly, I generally fly out of JFK so I can take the E/Airtrain there (about 50 mins) and then fly back to LGA and take a towncar home, due to landing later and avoiding traffic. I'd never take a cab to JFK, it can be nearly 2 hours from midtown in traffic.