In the case of a public transport vehicle this would imply that the car is the sole source of income and the main source of work for the person. In such a case it is important to see if the loan can be paid off with the use of the car, because you have to consider the loan repayment, the cost of operting the public transport vehicle and the cost to fund your lifestyle as well. If it is able to meet these then taking out a loan may be feasible.Buying a car with a loan is not a problem. What you are using the car for is the main issue, and it determines everything. It could be for a public transport job and that isn't bad.
So just understand.