在美國唸書 買車回台灣 值得嗎？

小弟 目前人在美國唸書
正考慮 要不要買台車 當代步工具
但想到 運回台灣 是個大問題
所以 想請問各位前輩

如果 我買BMW Z4 3.0si Coupe 這台值得嗎

http://www.autotrader.com/fyc/vdp.jsp?ct=p&car_id=255653272&dealer_id=63616121&car_year=2007&rdm=1238717220391&num_records=25&model=Z4&make3=&systime=&make2=&highlightFirstMakeModel=&start_year=2005&engine=&keywordsrep=&keywordsrep=&keywordsfyc=&keywordsfyc=&certified=&fuel=&body_code=0&awsp=false&search_type=both&distance=0&marketZipError=false&model3=&model2=&color3=&color2=&search_lang=en&showZipError=n&first_record=26&make=BMW&color=&keywords_display=&page_location=findacar%3A%3Aispsearchform&min_price=&drive=&default_sort=priceDESC&seller_type=b&max_mileage=&style_flag=1&sort_type=priceDESC&address=94108&advanced=&end_year=2010&pager.offset=25&transmission=&doors=&max_price=60000&cardist=2451&standard=false&rdpage=thumb

或是 Nissan 370Z

http://www.autotrader.com/fyc/vdp.jsp?ct=n&ncal_id=3165610&car_id=258287455&dealer_id=56079731&car_year=2009&rdm=1238722018086&num_records=75&model=370Z&systime=&make2=&highlightFirstMakeModel=&start_year=2005&engine=&keywordsrep=&keywordsrep=&keywordsfyc=&keywordsfyc=&certified=&fuel=&body_code=0&awsp=false&search_type=both&distance=0&marketZipError=false&ct=n&search_lang=en&showZipError=n&rdpage=thumb&make=NISSAN&color=&keywords_display=&page_location=findacar::ispsearchform&min_price=&drive=&default_sort=priceDESC&seller_type=b&max_mileage=&standard=false&style_flag=1&sort_type=priceDESC&address=94108&advanced=&end_year=2010&transmission=&doors=&car_year=2009&max_price=60000&cardist=0

請各位先進們 給小弟一點見意吧~~謝謝指教