Road trips are something anticipated and enjoyed by 77% of people in a survey but, alas, even with this relaxing activity comes an certain amount of tension over things that raise our ire...and here's a list of the most common, in descending order

7- Smoking.

6- The volume in the car. That includes everything from whether or not to blast the radio to the kids shouting at each other.

5- Swearing at other drivers or flipping them off.

4- Where to eat

3- Directions.

2-The temperature in the car.

1- Driving skills. That includes everything from driving too slowly or tailgating, to changing lanes too much.

[source]