All eight fatalities from the May 31, 2013 El Reno, OK tornado occurred in vehicles, including the fatalities of some well-known storm chasers.
Here are the tornadoes with at least 5 vehicle fatalities in the last 6 years:
| Fatalities in Vehicles | Date | City of Tornado (County as Noted) |
| 15 | 5/22/11 | Joplin, MO |
| 8 | 5/31/13 | El Reno, OK |
| 6 | 5/10/08 | Newton/Barry Counties, MO |
| 5 | 5/24/11 | Canadian/Logan Counties, OK |
Source: NWS Storm Prediction Center Fatality Summaries for 2008-2013 available here
AnalysisWire 