Chrome 42+ disables NPAPI plugins like Unity3d plugin.
Copy and paste the following text into your browser: chrome://flags/#enable-npapi and enable the NPAPI plugin.
Or try another browser like Firefox
In Offroad Racing 2 you can choose from four different vehicles. For example, choose a bus or truck. Perform stunts and tweak your vehicle as desired through various options. Use Esc to see the controls.