Related by context. Frequent words. (Click for all words.) 41 COT 40 PIR 37 seatbelts 37 airbag 36 seat belts 36 helmet 35 seatbelt 35 Scott Riggs 33 helmets 33 pit lane 32 Autoliv 32 Matt Kenseth 32 Allmendinger 32 NASCAR 32 Helmets 32 Kahne 31 seat belt 31 wearing helmets 31 Kasey Kahne 31 Marcos Ambrose 31 chassis 31 Dallara 30 Rusty Wallace 30 Kyle Busch 30 Red Bull Racing 30 Michael Waltrip 30 Raikkonen 30 IRL 30 Carl Edwards 30 racecar 30 wearing helmet 30 IndyCar 30 Elliott Sadler 30 straps 30 Grand Am 29 V8 Supercar 29 restrictor plate 29 Casey Mears 29 Nascar 29 Kenseth 29 Jeff Gordon 29 Daytona 29 Nextel Cup 29 Winston Cup 29 aerodynamic 29 Robby Gordon 29 Juan Pablo Montoya 28 downforce 28 RCR 28 Tony Stewart 28 Dale Earnhardt Jr. 28 Harvick 28 Brian Vickers 28 restraints 28 Kevin Harvick 28 CART 28 airbags 28 AJ Allmendinger 28 Talladega Superspeedway 28 handlebars 28 Dale Jarrett 28 ARCA 28 Kurt Busch 27 Denny Hamlin 27 DEI 27 Chip Ganassi 27 IndyCar Series 27 Busch 27 Earnhardt Jr. 27 Las Vegas Motor Speedway 27 steering column 27 Reutimann 27 NASCAR Sprint 27 David Ragan 27 Sterling Marlin 27 Bourdais 27 Jimmie Johnson 26 Chicagoland Speedway 26 Indy Racing League 26 Sprint Cup 26 Clint Bowyer 26 Nationwide Series 26 Jack Roush 26 Joe Nemechek 26 David Reutimann 26 Jamie McMurray 26 Foyt 26 speedway 26 Greg Biffle 26 Penske 26 Ryan Newman 26 Chip Ganassi Racing 26 Talladega 26 wearing seatbelts 26 Ricky Rudd 26 Champ Car 26 Earnhardt 25 Evernham 25 JGR 25 International Raceway 25 Bowyer