Found this one near by

[LSixer]

Looks killer. But, can it be driven on the street?

http://www.autotrader.com/fyc/vdp.jsp?car_id=232568843&dealer_id=1151027&car_year=1988&model=&num_records=25&systime=1193341234096&make2=&start_year=1981&keywordsfyc=&engine=&keywordsrep=&certified=&body_code=0&fuel=&awsp=false&search_type=both&distance=100&marketZipError=false&search_lang=&make=BMW&color=&page_location=findacar%3A%3Aispsearchform&min_price=&drive=&isDWSI=false&isDWSI=false&default_sort=priceDESC&max_mileage=&style_flag=1&sort_type=priceDESC&address=60074&advanced=&end_year=1991&doors=&transmission=&max_price=&cardist=10

[Bill-B]

Lots of talk on a couple other forums about this.  No, it is not street legal.  And there is debate to whether or not the cage in ideally built with driver safety in mind.