Driver-in-the-loop simulation is becoming more widespread among automotive OEMs and Tier 1 suppliers, not least because the latest data gathering and modelling methods mean virtual road test routes can be created more quickly and accurately. Dutch company, Cruden, is a leader in the design and manufacture of vehicle simulators for automotive testing as well as the building of road, tyre and vehicle models. just-auto spoke to Nico Kruithof, a computer scientist working at the forefront of developments to make motion simulators an essential part of the vehicle dynamics evaluation programme.