An interesting idea and very visually impressive! It has a good style and the systems you implemented (map, text popups, visual clues like the pickup/drop off zones) all worked well. It felt quite luck dependent as to whether or not I failed, as the traffic doesn't appear to have any kind of predictable pattern or follow any rules and was too fast to dodge, so if I got lucky I delivered the parcel, otherwise a car spawned in my lane and I couldn't avoid it in time.
As others have mentioned, maybe tweaking the traffic behaviour, speeding up the player vehicle or added a direction icon to show roughly where the target is would help gameplay somewhat. Nice work though and a challenging project to undertake in a week so well done! :)