Rubuta ci gaba ga wannan sakin layi - Leonard zai koma Vel's Parnelli Jones kuma a 1970, yana aiki tare da mashahurin masanin injiniya George Bignotti. A tserensa na farko na shekara, Indianapolis 500
zai tuka motar Johnny Lightning PJ Colt-Ford mai lamba 15. A cikin tseren Leonard ya cancanci zama na 18 kuma ba da daɗewa ba ya gudu a matsayi na biyu don abokin aikinsa Unser. Injin Leonard zai daina bayan zagaye 73 kuma zai iya gamawa a matsayi na 24. An gano bayan tseren an kunna maɓallin injin, ma'ana cewa babu wani abu da ba daidai ba tare da injin kuma Leonard zai iya ci gaba. Leonard zai yi gasa a cikin Rex Mays Classic a Wisconsin State Fairgrounds Park Speedway inda kawai ya jagoranci zagaye tara na karshe a kan hanyar zuwa nasararsa ta farko tun 1965 a Milwaukee. Leonard zai fara wani tseren a wannan shekarar, California 500 a Ontario Motor Speedway, inda zai cancanci a matsayi na 6 kuma zai gama a matsayi na 13 bayan ya juya. Leonard zai gama kakar wasa ta 32 a maki.