and Graham Hill, demanded changes to the circuit to increase safety, including Armco barriers along the entire of the Nordschleife. No agreement was reached and the Grand Prix moved to Hockenheim, where Rindt took his fourth victory in succession. The race was another two-way fight, this time between Rindt and Ickx, who exchanged the lead several times. This meant that he could have secured the drivers' title at his home event at the . He set the Lotus 72 on pole position, to the delight of the crowd, but retired from the race with an engine failure. The title decision was therefore postponed to the next race in Monza. Death and legacy The paddock moved to the at Monza, a track known for high speeds; drivers often used the slipstream of cars in front to increase their pace. Because of this, many teams, including Lotus, opted to drop the rear wings mounted on the cars to reduce drag and further increase speeds. The more powerful flat-12 Ferraris of Jacky Ickx and Clay Regazzoni had been up to faster than the Lotus at the previous race in Austria. Rindt's teammate John Miles was unhappy with the wingless setup in Friday practice, reporting that the car "wouldn't run straight". Rindt reported no such problems, and Chapman recalled that Rindt reported the car to be "almost 800 rpm faster on the straight" without wings. On the following day, Rindt ran with higher gear ratios fitted to his car to take advantage of the reduced drag, increasing the car's potential top speed to . On his fifth lap of his practice session, he crashed heavily at the approach to the Parabolica corner. Denny Hulme, who was following Rindt at the time, described the accident as follows: Upon impact, a joint in the crash barrier parted, the suspension of the vehicle went under the barrier, and the car hit a stanchion head-on. The front end was destroyed. Rindt was in the habit of using only four points on the five-point harness then available and did not wear the crotch straps, as he wanted to be able to exit the car quickly in the event of fire. As a result, upon impact he slid under the belts, and the belts fatally slit open Rindt's throat. Later investigations found that the accident was initiated by a failure of the car's right front inboard brake shaft, but that