Sports

Detroit Grand Prix hoping its new-look track holds up while hosting IndyCar doubleheader

  • IndyCar driver AJ Allmendinger talks with team owner Roger Penske before a practice session for the Detroit Grand Prix auto tace on Belle Isle in Detroit, Friday, May 31, 2013. The Detroit Grand Prix will feature IndyCar's first attempt to have a pair of full-length auto races in the same weekend and unlike last year, Penske is confident the track will hold up. (AP Photo/Bob Brodbeck)

    IndyCar driver AJ Allmendinger talks with team owner Roger Penske before a practice session for the Detroit Grand Prix auto tace on Belle Isle in Detroit, Friday, May 31, 2013. The Detroit Grand Prix will feature IndyCar's first attempt to have a pair of full-length auto races in the same weekend and unlike last year, Penske is confident the track will hold up. (AP Photo/Bob Brodbeck)  (The Associated Press)

  • IndyCar driver Scott Dixon takes turn two during a practice session for the Detroit Grand Prix auto race on Belle Isle in Detroit, Friday, May 31, 2013.  The Detroit Grand Prix will feature IndyCar's first attempt to have a pair of full-length auto races in the same weekend. (AP Photo/Carlos Osorio)

    IndyCar driver Scott Dixon takes turn two during a practice session for the Detroit Grand Prix auto race on Belle Isle in Detroit, Friday, May 31, 2013. The Detroit Grand Prix will feature IndyCar's first attempt to have a pair of full-length auto races in the same weekend. (AP Photo/Carlos Osorio)  (The Associated Press)

  • IndyCar driver Alex Tagliani, of Canada, takes turn one during a practice session for the Detroit Grand Prix auto race on Belle Isle in Detroit, Friday, May 31, 2013.  The Detroit Grand Prix will feature IndyCar's first attempt to have a pair of full-length auto races in the same weekend. (AP Photo/Carlos Osorio)

    IndyCar driver Alex Tagliani, of Canada, takes turn one during a practice session for the Detroit Grand Prix auto race on Belle Isle in Detroit, Friday, May 31, 2013. The Detroit Grand Prix will feature IndyCar's first attempt to have a pair of full-length auto races in the same weekend. (AP Photo/Carlos Osorio)  (The Associated Press)

Roger Penske has put time, money and passion into making the Detroit Grand Prix a world-class event.

Auto racing's return to the Motor City last year after a four-year absence didn't go well.

Scott Dixon won the event marred by poor track conditions that stopped the race for a little more than 2 hours and shortened the 90-lap race to 70. Chunks of asphalt and concrete were missing, creating pot holes and grooves that spoiled the show.

Penske's Michigan-based company and Chevrolet invested nearly $2 million into the track that has been reconfigured to make it wider in spots and faster on a straightaway.

The improvements will be put to a test because IndyCar has scheduled two, full-length races for the first time this weekend on Belle Isle.