A truck is a lorry or motor vehicle 
What is the uses of a truck? 
It is designed to transport cargo
Is it a heavy cargo or light cargo?
Trucks vary greatly in size,power and configuration 
What are their differences? 
Commercial trucks can be very large and powerful while private trucks are the opposite
Wow,  what more can you  tell me about truck? 
Modern trucks are mainly powered by diesel engines
Is there any truck that is powered by fuel?