We were also novices when it came to cars and didn’t know what to look out for. As a result, after less than a month of use, one of our car’s engines completely stopped while I was on the way home from school on the highway. Thankfully there were no accidents or injuries, but it was a harrowing experience nonetheless and the administrative headaches that followed were a huge pain.

These experiences and pains is what led me to create Car Buddy, an AI-powered chrome extension that gives you the fair value of the car in-page on the car listing itself, but also lets you “talk to the car”. It gives you insights and warnings of common issues faced and acts as a personalized chatbot where you can ask questions about the specific car, not just based on its model/make but its mileage, condition and more. It is contextualized with data from the specific car listing fed to an LLM, Gemini 1.5. I hope this tool will help make the experience of used car shopping better than it was for me.

There are some improvements I hope to make, and perhaps some bugs I have yet to catch. But I hope you’ll check it out and appreciate any and all feedback and suggestions on how to make it better!

You can read more about it on my site: https://www.matthiaslee.dev/ Github: https://github.com/matteolee72/carbuddy

P.S. searching for summer 2025 internships :) or work I can do as a final year student