It could be a while before your next red carpet event, but there could be a new limousine waiting when you do.

A prototype of a stretched Cadillac XT5 SUV has been spotted on the roads outside General Motor’s Milford Proving Ground in Michigan by an automotive paparazzo.

(Brian Williams)

The elongated midsize SUV test car has a third door – which may not be functional –- mounted in the middle and a wheelbase stretched to accommodate it.

(Brian Williams)

Cadillac previously offered a “professional vehicle” version of the XTS sedan that was engineered for stretch limousines and hearse conversions, but the XTS model line went out of production last October. Its top rival, the Lincoln MKT Town Car Limousine, was also discontinued around the same time.

(Cadillac)

Cadillac hasn’t officially announced a replacement, but a representative at one of the largest limo and hearse manufacturers in the U.S. said they’re planning to start using the XT5 and understand Cadillac has a professional vehicle based on it in the works.

SYLVESTER STALLONE SELLING HIS STRETCH CADILLAC SUV FOR $350,000

(Brian Williams)

The retail XT5 starts at $45,090 and is available with either a 237 hp 2.0-liter turbocharged four-cylinder or 310 3.6-liter V6.

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