Hosted by celebrity game show host and Mr. Clean look-alike Howie Mandel, the 3rd Annual Boca Raton Concours d'Elegance was a smash hit. The event saw the first U.S.-spec Audi R8 V10 and Ferrari California go under the hammer, and those two cars alone managed to raise a grand total of $850,000 for the Boys & Girls Clubs charity.

Bidding for the unique R8 V10 was intense but it finally went for $500,000. However, to help raise more money, the winning bidder at the Boca Raton auction offered to give up his rights to the first R8 V10 if Audi would give him the second model available in the U.S. Audi agreed and the two R8 V10 models sold for $850,000 combined.

The R8 V10 5.2 FSI is an impressive car, adding to the finely balanced R8 platform a compact and powerful 5.2L V10 engine generating 525hp (386kW) and 391lb-ft (530Nm) of torque, rocketing the car to 62mph (100km/h) in just 3.9 seconds and on to a top speed of 196mph (316km/h).

Bidding for the Ferrari California topped out at $350,000

Bidding for the Ferrari California topped out at $350,000

The first examples are expected to arrive in the U.S. in the fourth quarter of the year. No pricing details have been announced as yet.

Though its release isn't quite as recent, Ferrari's sensuous California also took to the stage. The 460hp (343kW) Italian stallion nearly matches the more powerful Audi's performance with a 'sub-4 second' 0-62mph (100km/h) run, but bids topped out $350,000.