Com data Card ?

Okay, I'm new to the trucking industry and am thinking about going to work for a Expiditer company . I've had several offers but I am confused about the com data card. Some company's want to pay my co driver and I a 40% split and some other company's want to pay us 45% split and pay for our fuel on a com data card which I think the gas on the com data is coming out of the 45% split. The owners that wants to do the com data says it's a better deal , but to me it doesn't sound right. He has only been in business for a year and he also said that I would need to pay for my own transportation to orientation and that I'm REQUIRED to pay for oils changes and tolls but he said the i will get reimbursed. Can someone please brake this com data thing down in simple terms please

 

Thank you I now understand about com data . Now for the next quiyion ...What is fuel surcharge ? Please understand that I'm as green as they come, I dont want to just jump into something and get taken advantage and be stuck in a contract that I cant get out of with these companies

 

The people who have been calling me are owner operator through Panther . It seems each owner handles his operations diffrent. It makes it hard for a newbie without any knowledge of expediting to make the right choice . Maybe just going with a big trucking company over the road would be a better decision. I really had my heart set on Expiditing but I dont know enough about it. Thank you for the reply