TrackMania - The most popular online PC racing game.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
SuperTuxKart - 3D arcade-style MK-like kart racing game
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Speed Dreams - Speed Dreams is a 3d cross-platform, open source motorsport simulation and racing game.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.