vTreePro 2.0 Practice Tree Software for Windows features; random dial-in for computer opponent, lane selection, two driver mode, sound, user selectable background, optional external switches, and is packed with other popular practice tree features. vTreePro is an excellent tool for helping improve your reaction time accuracy and consistency, and determining what your approximate vehicle roll-out time is. vTreePro's sound runs in the background at a lower priority as to not interfere with the timing accuracy. We have found that we cannot tell the difference in reaction times acquired in vTreePro when comparing to those obtained with other accurate practice tree tools.