[protoserge]

Suggestions for motors are great and all, but may not be the best for the application. An FRC setup will most likely work for you, but I urge you to define the requirements.

What are the major areas of functionality and concern? These could be things such as maintainability, maneuverability, reliability, durability, etc. For each of the requirements, outline an objective (what you really desire) and a threshold (the minimum that you will accept). The space between the objective and the threshold is the trade space - you will use this to determine if your solution is workable.

Here are some of my first thoughts on requirements:

So far, I have two "requirements": 30lb weight and 6 mph. Do you have a maximum weight allowed? A minimum speed?

What acceleration is required? This will help define your motor HP and gearing/transmission requirement. It will also help define your electrical power requirement.

How will you get electrical power? Internal combustion engine with a generator-inverter setup? Battery? Fuel cell? Solar? This will help define motor power limits or operating time.

What is the vehicle operating time? How long will it be using full power? What other electrical loads are required?

What ground clearance is required? This will help define wheel diameter and relates to the HP and transmission requirement.