This project is motivated by my eagerness to unite both my bachelor’s degree on Telecommunications Engineering with my master’s on Automotive engineering. Upon speaking with Albert Aguasca we saw the possibility to make this project which derives from an ongoing project that aims to use a RADAR in the 120GHz band to detect vital signs, and throughout the thesis the objective is to assess whether this is a technology should and could be brought to the automotive world. The main part of the memory focuses on the work undergone both in the laboratory and inside of different cars. In both cases we have taken measurements with the system under study, and to several volunteering subjects, to process it afterwards using matlab to read and process the signals. Since the goal is to assess the feasibility of the technology the different processing methods are not widely discussed, ultimately being our subject opinion the one that forms the conclusion of the analysis rather than an automated method. Parallel to that there is an analysis of other aspects to consider if this technology was to be used in a car or any other vehicle, the legal aspects, the technical regulations and the scenario where the system would work best. In conclusion the system could work well, given the micro-metrical precision given by the high frequency radar a very precise monitoring system would need a lot of effort to work properly but as a means to track vital signs it shows very promising potential