Can someone help me remember a drama!

All I could remember about the drama is that a mom becomes a driver/helps this woman out. They eventually   end up becoming really good friends by the end of it. This isnt the focal point of the show tho just part of it I think. 

 lyn:

Moment of Eighteen? The ML's mom helps the FL's mom when she injures her arm by driving for her

omg yes this is it! thank you!