Give some stream of consciousness and then the answer. R / T is the performance marker used on Dodge automobiles since the 1960s (much like Chevrolet Super Sport). R / T stands for Road / Track (no "and"). R / T models come with R / T badging, upgraded suspension, tires, brakes, and more powerful engines. Some models come with monotone paint and stripes, as well as aggressive body parts. The Chrysler SRT Division (Chrysler Corp. SRT Vehicles) has been the high performance auto group for Dodge vehicles from 2004 until present, therefore the R / T designation does not carry the status it once did. The R / T vehicles, however, still carry upgraded badging and performance indicative of their heritage.

Based on this passage, what does rt mean on a dodge challenger?
The relevant information to answer the above question is: R / T stands for Road / Track (no "and").
Therefore, the answer is Road / Track ( no '' and '' ).