The problem ZeroCabs solves

A decentralized ride-hailing service using blockchain technology with DIMO for car identity, Web3Auth for authorization, Sign Protocol for attestation, and XMTP for secure communication between riders and drivers. The service connects riders to drivers and emergency responders using smart contracts and OpenStreetMap API for real-time location tracking.

Challenges I ran into

Integration of smart contracts with the fronend , and implementing docs of third party apps