Amazing. 
 Hands.Down. 
 I may love Beth and Ryan but I love Isaiah and Rachel even more. 
 Rachel came from a rich family and since she's the youngest, there are lots of expectations from her especially when her older sister Colleen died from cancer. Her panic attacks are recurrent and she keeps it a secret because she doesn't want anyone to worry about her sickness. She's pressured with these expectations to a point she can't do what she loves. Driving her Mustang is one way of keeping away her stress in life. 
 Isaiah became a foster kid at a very young age when his mom is in prison. He hates her for not taking care of him. He is a boy. He wants to become a mechanic and drag racing is his past time. Then he meets Rachel on a drag race which brought them closer as they pay their debts. 
 Their love story is quite impressive because of their passion about cars and their differences aren't a hindrance on their relationship. . They both improved and learned lessons. For Rachel, Don't be afraid to speak out of what you feel. Be yourself and do things that you are willing and comfortable to do. Lastly for Isaiah, Learn how to forgive someone and give them a second chance. 
 Another thumbs up to Katie McGarry! 
 PS. Those Mustangs are sexy beasts. :D