Starting April 8, travelers can catch a free, air-conditioned ride aboard the new PHX Sky Train to get to Sky Harbor Airport from either a light-rail station or an economy parking lot.

The first phase of the $1.6 billion project connects with Terminal 4 — which handles 80 percent of Sky Harbor’s passengers — and includes stops at the East Economy parking lot and at the Metro light rail station at 44th Street and Washington.

The driverless cars, leaving about every three minutes, will make the trip in about half the time of the current shuttle buses.

Read the rest of this story, and see photos, Sunday in the Arizona Daily Star.