Premium SUV Nationwide for $309, REALLY?

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Received an e-mail yesterday from Budget for premium SUV weekly rate of $309. Checked availability in Boston and 50 miles radius and found nothing. Called Budget and a very nice CSA checked but also found nothing. Decided to check a few other cities (Little Rock, Dallas, Miami, Detroit) to see if this mythical premium SUV exists and found nothing. I'm beginning to think Budget doesn't even have premium SUVs in their rental fleet. If you want to waste your time checking, the discount code is U030134.
Just found one in DEN for next week. Got a slightly better deal with a luxury car.
Glad someone was able to score on this promotion.
I tried for a rental at IAD and they have Premium SUVs but the discount isn't working.
Most Avis/Budget locations share fleets these days. Avis has a bunch in their larger cities (Infiniti FX, Cadillac SRX, Lincoln MKX/MKT and even Navigators in some locations). They exist, just maybe not available everywhere or at your times.