Laura has Real Time Traffic with Sirius XM and it doesn't work very well. Leo says he gave up on that. The best solution is the phone, not the car. It takes forever for a car maker to update the software in the car. Her phone gets updated all the time, though.
For the best app for traffic, road hazards, and more, Laura should consider Google's Waze. It's crowd sourced and it's far better. It has turn by turn directions, and will reroute when a new route comes available that's faster. That's what Leo uses. She could even install Leo's voice for directions.