Tactic TTX600 6-Channel 2.4GHz Transmitter System with Receiver
http://www.robotmarketplace.com/products/0-TACJ2600.html
Sabertooth 25 Dual 25A Motor Driver
http://www.robotmarketplace.com/products/0-SABER2X25-RC.html
MTD 20 in. Push Gas Walk-Behind Lawn Mower (No longer on sale, now $149)
http://www.homedepot.com/p/MTD-20-in-Push-Gas-Walk-Behind-Lawn-Mower-California-Compliant-11A-020L206/203069467?N=c5ah#.UaSm8UCbNn8
source