Registrations for new hybrids rose to 199,148 in 2005, a 139 percent increase from the year before, as more models came on the market, according to R.L. Polk & Co., a Southfield-based company that collects and interprets automotive data. The Lexus RX400h and hybrid versions of the Toyota Highlander and Mercury Mariner were among the new models from which consumers had to choose.







