The grid for the second leg of IndyCar's two-part Texas race will be decided with a random draw, the series has announced.
In a new innovation for 2011, the Texas Motor Speeway round on June 11 is being split into two half-length back to back races, named the Firestone Twin 275s. Half-points will be awarded for each.
Qualifying for the first race will take place as normal, but afterwards a draw will be held to decide the race-two starting order.
IndyCar competition president Brian Barnhart said: "We want to keep the format of this event as exciting as possible for our fans as we revive this open-wheel tradition.
"With the starting field for the second race set by random draw, you could see the winner from the first race starting from the back of the field, creating quite a bit of drama.
"Also, if a car suffers damage and fails to finish the first race, there will be an opportunity for the driver to rejoin in the second race as we will have extra engines available for use in their back-up chassis.
"We want to make sure we're ensuring a strong field for race two to keep the excitement and momentum going throughout the entire event."
Texas Motor Speedway boss Eddie Gossage expressed his delight with the format.
"You have to love the open-mindedness of the INDYCAR officials for randomly selecting the starting line-up of the second Firestone Twin 275," said Gossage.
"It guarantees a real jumble, an incredible shoot-out in the second race. Different strategies are going to be employed for each race. What a night of racing this will be."