Developed during the union of Daimler and Chrysler, the two-seater is based on the Mercedes-Benz R170 platform which shares 80% of its components with the first generation SLK. The second generation SLK was built on a new R171 platform starting in the 2005 model year; the R170 platform was essentially handed down to Chrysler for use in building the Crossfire. Having initially arrived in 2001 as a concept car styled by Eric Stoddard, the Chrysler was further refined by Andrew Dyson before production began in 2003 for 2004 model year sales.