adidas Football today announced that the brand is offering custom Porsche 911 Carrera sports car to the three fastest prospects. This offer is open to the athletes who sign with adidas prior to running their official 40 yard dashes later this month.The custom Porsche 911 Carrera sports cars feature a Cheetah graphic pattern mirroring adidas’ new UNCAGED adizero 5-Star 40 cleat, which launches Thursday.Weighing in at only 4.7 ounces, adidas’ UNCAGED adizero 5-Star 40 is the lightest football cleat ever. The fabric on the cleat’s upper is reinforced in key support zones and made with a SprintSkin Ultra that’s 15 times stronger than steel, yet light enough to float on water. The upper is dropped onto a SPRINTFRAME football plate – the lightest football plate ever created. The plate features rebound characteristics in the forefoot to give players ultimate propulsion from toe-off through the final step of the 40 yard dash.adidas’ new adizero 5-Star 40 cleat is part of the UNCAGED Collection and is available today for $150 at adidas.com, Eastbay.com and dickssportinggoods.com.