Electric Car Gear Repair

I need a replacement drive gear part for a Little Tikes electric car. The original plastic gear has worn down due to the electric drive motor coming loose.

Requirements:
- Material: Plastic
- Should be durable enough to withstand wear
- Must fit the Little Tikes model

Ideal Skills and Experience:
- Experience with plastic part design and manufacturing
- Familiarity with toy or small vehicle mechanics
- Ability to create a reliable, long-lasting replacement part

Please provide samples of similar work and a timeline for completion.