Sentence 1: Jack floored the gas and tried to cut in traffic. 
 Sentence 3: And the one in front of that one moved to do so as well 
 Sentence 4:  Jack honked his horn angrily, but it was no use 
 Sentence 5:  He learned an important lesson in patience and courtesy 
 Option 1: The car he wanted to cut in front of blocked the space! 
 Option 2: The car infront of him was blocking the road.