Underground Racing Lamborghini cracks 250 mph--watch the video here

Earlier this year, we told you about Underground Racing, a shop in Charlotte, N.C., that makes a business out of upgrading Lamborghinis with twin turbochargers to boost engine output to more than 1,000 hp.

Now, a Lamborghini Gallardo Superleggera upfitted by Underground Racing cracked the 250-mph mark at the Texas Mile event.

Car owner Richard Holt made the 250.1-mph run in late March, but video was posted just this week.

We gave you a look at Underground Racing and what it does back in January. You can read the article, including a test drive with IndyCar driver Graham Rahal, here: http://www.autoweek.com/article/20100104/CARREVIEWS/100109992

The twice-yearly Texas Mile is a three-day, high-speed challenge staged on a runway for the Goliad Industrial Air Park, about 90 miles southeast of San Antonio. Participants drive to post a top speed for a one-mile section of the runway.

Click below to watch the video of the 250.1-mph run:

By Dale Jewett