US footwear firm Crocs has opted to drive forward its presence in motoring through new Nascar tie-ups.

The casual shoe maker, which quadrupled its revenues for 2006, said it has reached licensing agreements or signed letters of intent with Nascar racing teams Dale Earnhardt, Hendrick Motorsports, Joe Gibbs Racing and Richard Childress Racing.

Crocs will have the use of team marks, as well as driver names, signatures and numbers on its Crocs footwear and Jibbitz products. The new line will be available at race venues and US retail locations.

Ron Snyder, president and CEO of Crocs, said: "Stock car racing is America's fastest growing spectator sport and we are extremely excited to be associated with many of the top teams and drivers. We look forward to bringing this new line of Crocs products to their large and growing fan base."

Crocs last week (13 February) brokered a licensing deal with Warner Bros Consumer Products.