You go at red, but stop at-Riddle

Riddle 
Mehul and Aalia go on a secret mission together, they get bored in the journey and decide to riddle each other. Mehul asks Aalia, You go at red, but stop at green. What am I? Aalia is puzzled! Can you help her give the answer?

    A watermelon. You eat the red part, and you stop eating at the green part.

Mindyourlogic Riddle: Answer:
You go at red, but stop at-Riddle