DAYTONA BEACH, Fla. A three-day test at Daytona International Speedway came to an unexpected end for many NASCAR teams on Friday.
During Friday afternoons session, which featured teams drafting in a pack for the first time, Dale Earnhardt Jr. attempted to bump draft with Marcos Ambrose and instead hooked Ambroses No. 9 Ford and sent it into the wall.
The incident collected 12 of the 18 cars which were on the track at the time.
Many years, that wouldnt be a problem, but with the new 2013 model cars still being built, almost of those teams involved did not have backup cars available for use.
Before the day was over, Michael Waltrip Racing, Richard Petty Motorsports and the teams of Jeff Gordon, Kasey Kahne and Jamie McMurray were among those already making their way back to North Carolina.
We were going around (Turns) 1 and 2 and I thought Marcos was backing up to me and looking to get a run on the back straightaway. I tried to push him a little bit and I had a hard time getting our bumpers lined up, Earnhardt said.
I was hoping I didnt start it and I dont know if I did but it tore up a lot of cars that were out here trying to work.
About 14 cars tried a drafting session at the 1 p.m. start and it became clear, the new cars were far more sensitive to the bump drafting that has become commonplace on NASCARs superspeedways in recent seasons.
NASCAR officials on Thursday had said the design of the new car was planned to help eliminate that practice.
You definitely have to be more careful pushing people, Earnhardt said. The cars are really loose they are a little bit more of a handful, especially in the draft.
With final approval only given on several parts of the new model cars last month, teams have been scurrying to get cars ready for this test and another next week at Charlotte Motor Speedway.
It was unclear how or if Fridays incident will set teams schedules back.
Asked if bump-drafting was a thing of the past reigning series champion Brad Keselowski said, I think you can see from Dale that you can do it but we are all learning the consequences and nobody wants to be that guy.
Unfortunately, somebody has to be that guy. That is the way it is.
In the first drafting session, Trevor Bayne posted the fastest average lap speed at 199.650 mph. He was not on the track during the drafting session which ended with a wreck.
Five-time series champion Jimmie Johnson was among those who never had any intention of participating in the drafting sessions for fear of losing a car.
For us, it makes no sense to go out there and draft because you arent going to learn anything. Youre just taking a chance of ruining your best race car, Johnson said.
Generally speaking, we just dont have any cars. This is our only speedway car for the No. 48 car. We want to have that as a backup when we come back.
The remaining teams continued with single-car runs the rest of Friday. Teams can continue to test from 9 a.m. to 5 p.m. on Saturday.