Hertz - Alternative "Prestige Collection" Deal in the Silicon Valley

I received an e-mail promotion from Enterprise offering a 3-day weekend special at $49.95/day for a C-Class Mercedes sedan rental (extra $10 to rent the ML SUV) in the Silicon Valley area - much better deal than Hertz’s Prestige Collection.

I have not driven a C-Class Mercedes, but I am quite pleased with the current Prestige Collection vehicles.