  We prove that the Chow motive with integral coefficient of a geometrically
rational surfaces~$S$ over a perfect field~$k$ is zero dimensional if and only
if the Picard group of~$\bar{k}\times_{k}S$, where~$\bar{k}$ is an algebraic
closure of~$k$, is a direct summand of a $\Gal (\bar{k}/k)$-permutation module,
and~$S$ possesses a zero cycle of degree one. As shown by Colliot-Th\'el\`ene
in a letter to the author (which we have reproduced in the appendix) this is in
turn equivalent to~$S$ having a zero cycle of degree~$1$ and
$\CH_{0}(k(S)\times_{k}S)$ being torsion free.
