The unibody is now the preferred construction for mass-market automobiles and crossovers. This design provides weight savings, improved space utilization, and ease of manufacture. Acceptance grew dramatically in the wake of the two energy crises of the 1970s, and that of the 2000s in which compact SUVs using a truck platform (primarily the USA market) were subjected to CAFE standards after 2005 (by the late 2000s truck-based compact SUVs were phased out and replaced with crossovers). An additional advantage of a strong-bodied car lies in the improved crash protection for its passengers.