lani is 2yrs and 4mths and got a trike off santa with a handle on the back for us to push her, she uses the peddles all the time and sometimes we let go of the handle and she is still able to peddle it - however she does have a brother who just rides and rides and rides all day every day lol

i totally agree tho i don't think a trike has peddles in a natural position to get the hang of peddling a normal bike. my ds could never use a trike but got a small bmx with training wheels for his 3rd birthday and mastered it immediately