Complex sentence: Several updated models have been produced since that time to improve upon its original abilities to carry out mobility assistance tasks, including an update in 2005 that increased the robot's running speeed to 3.7 miles per hour, which is twice as fast as the original ASIMO.
Split into simpler sentences: Several updated models have been produced since that time to improve upon its original abilities to carry out mobility assistance tasks. An update in 2005 increased the robot's running speed to 3.7 miles per hour, which is twice as fast as the original ASIMO.