In People v. Laursen (1972) 8 Cal.3d 192, the Supreme Court stated: "This court has consistently recognized that 'robbery . . . is not confined to a fixed locus, but is frequently spread over a considerable distance and varying periods of time.' . The assault of the victim, the seizure of his property and the robber's escape to a location of temporary safety are all phases in the commission of the crime of robbery linked not only by a proximity of time and distance, but a singlemindedness of the culprit's purpose as well. Accordingly, we conclude that when as in the instant case the finder of fact may have reasonably inferred and accordingly have found that the kidnaping of an individual was to effect a robber's escape such kidnaping is proscribed by the provisions of section 209." (Laursen, supra, 8 Cal.3d at pp. 199-200.)