Yes! That's it. The DMC Delorean is made in Texas, US and is used as the main car in Back to The Future(hence the hint "Unbelievable powers of a clock"). If you notice some of the features, an old Lotus uses the same sleek, yet kind of blocky design. This car is also used in the music video, "Thrift Shop" by Macklemore and Ryan Lewis. Video is shown in the link below:
http://vimeo.com/m/57418480
If you notice, both MM and RL are dressed in clothes from the Thrift Shop and they are riding bikes in the beginning of the song. The DMC Delorean is also featured in the beginning of the video.
Good job.