The return of Park Avenue Ultra’s fender portholes signals a styling statement unseen since the 1980s. This go-round the Park Avenue Ultra supplies a standard Gran Touring suspension and rear stabilizer bar, altered four-gauge cluster graphics as well as side mirrors that incorporate light-up red turn arrows – an added safety asset that alerts other drivers to right and left vehicle maneuvers. Powering the Buick Park Avenue Ultra is 3.8-liter supercharged V6 engine producing 240 horsepower at 5200 rpm. Engine mates to a four-speed electronic transmission. The front drive full-size sedan can be equipped with an optional head-up display ($300) and an ultrasonic rear park assist ($295). Park Avenue Ultra’s rearview mirror, which features an outdoor temperature read-out and compass, is the interface point for the OnStar system. During an extended drive, a tire pressure loss alert appeared in the information center. After pressing a rearview mirror button that links to the OnStar help center, an attendant dispatched a tow truck to the vehicle’s location (tracked via a global positioning satellite). Even amid society’s ever-present cell phones, OnStar rates as a must-have service. Park Avenue Ultra’s standard fare list includes heated leather seats, moisture-sensing wipers, StabiliTrak vehicle stability system, cruise control, and remote keyless entry. Per gallon mileage estimates are 18 city/28 highway. MSRP is $39,145.