CNG powered Mercedes SL 600 by Speedriven packs 800 hp - seeks natural gas speed record
25/02/2011 05:14 - admin
Texas engineer teams up with Chicago-based tuner Speedriven to make this 2007 SL 600 the fastest CNG-powered car around[...]

Source: worldcarfans Tuning
http://www.tuning-links.com/news_1301_CNG+powered+Mercedes+SL+600+by+Speedriven+packs+800+hp+-+seeks+natural+gas+speed+record.html