Come April, Aurora Innovation plans to pull the backup human driver from behind the wheel of one of its trucks, signifying commercial deployment.

Aurora Innovation raised $483 million in a public stock offering this week as the autonomous trucking company looks to fund operations beyond its commercial launch later this year.

Pittsburgh tech companies raised just over $3 billion in funding last year, led by landmark investments in autonomous vehicle startups like Aurora and Stack AV.

Aurora announced the completion of a Houston terminal that finalizes the first commercial-ready route for driverless trucks.

The pivot from self-driving cars to self-driving trucks is the latest sign of how difficult it is to fully take our hands off the wheel, industry experts and researchers say.