Table:
text: 2007–08 A1 Grand Prix of Nations, Netherlands
Sprint Race
Sprint Race
Team Driver Laps Time_ Grid
South Africa Adrian Zaugg 12 18`01.087 1
France Loïc Duval 12 +7.532 2
Netherlands Jeroen Bleekemolen 12 +8.097 5
Mexico Salvador Durán 12 +8.205 3
Switzerland Neel Jani 12 +8.581 4
Germany Christian Vietoris 12 +10.344 6
Great Britain Oliver Jarvis 12 +10.566 10
Ireland Ralph Firman 12 +12.168 7
New Zealand Jonny Reid 12 +13.934 8
India Narain Karthikeyan 12 +18.516 11
Portugal João Urbano 12 +24.967 9
Italy Enrico Toccacelo 12 +25.717 13
Brazil Sérgio Jimenez 12 +26.044 12
Lebanon Chris Alajajian 12 +34.547 18
Czech Republic Erik Janis 12 +35.268 14
Malaysia Alex Yoong 12 +35.895 20

text: 2007–08 A1 Grand Prix of Nations, Netherlands
Sprint Race
Sprint Race
Team Driver Laps Time_ Grid
China Cong Fu Cheng 12 +36.298 15
Pakistan Adam Langley-Khan 12 +36.510 16
Canada James Hinchcliffe 12 +39.509 21
Indonesia Satrio Hermanto 12 +47.932 22
Australia Ian Dyk 12 +47.983 17
USA Buddy Rice 12 +48.208 19

Question: What is the average starting grid of driver Christian Vietoris at the 2007-08 A1 Grand Prix of Nations in the Netherlands who has less than 12 laps?