FARMINGTON — Soapbox derby cars lined up at the top of Farmington's Sullivan Avenue on Saturday for the fourth annual Boys and Girls Club soapbox derby.

The cars raced down the street, reaching speeds of up to 23 miles per hour, according to police officers who were present with their speed radar guns.

The derby was held in conjunction with a car show put on by the New Mexico Street Rodders Car Club. After racing, the children voted on their favorite car in the car show.

"Most of the kids actually had to help put a car together," said Benedikte Whitman, the president of the Boys and Girls Club.

Taylin Calder, 11, enjoyed putting on the body of the car and working the power drill.

"It's fun to do," Calder said.

She said she was challenged by technical aspects, such as making sure the screws were facing the right way.

While traditionally soap box derbies require families to purchase all the parts and to build the car, Whitman said the Boys and Girls Club provided the material because most of the parents can't afford the $600 to $700 kits.

Instead, the project was turned into an opportunity to teach the children about collaboration, science and math.

And, once the cars were put together, the fun part began -- racing.

Nine-year-old Elizabeth Pickard said that when she steered in her soapbox derby car, all she could think about was crossing the finish line. But, she admitted, she was nervous at the top of the hill.

"My tummy feels tingly a little," Pickard said.

Hannah Grover covers news, arts and religion for The Daily Times. She can be reached at 505-564-4652 and hgrover@daily-times.com. Follow her @hmgrover on Twitter.