A federal investigation has been launched into taxis without steering wheels proposed by Musk. The probe is focused on these taxis, which have been touted by Musk. Details of the investigation are not fully available in this brief summary.

For more information, readers can consult the full report from NBC 5 Dallas-Fort Worth. The investigation marks a development in the consideration of Musk's taxis, which have garnered attention due to their unconventional design. Further details about the probe and its implications can be found in the original source.