A new type of an innovative hybrid crash absorber element is under development for a vehicle restraint system that consists of compressible metal tubes enclosed with GFRP. For the design process, static as well as strain rate dependent materials properties of GFRP, steel, and the hybrid material, respectively, are required in the as fabricated and in the aged conditions. In particular, the interfaces of the hybrids are of great importance, since they are prone to corrosion under environmental conditions. To simulate the environmental impact on the interfaces, the hybrid material has been artificially aged to characterize the strength of the interface by means of Single-Lap-Joint-, Interlaminar-Shear-Strength and Edge-Shear-Testing before and after aging, respectively. According to the literature, the absorbed energies of metals and GFRP increase with increasing compressive strain rates. This is confirmed for GFRP specimens by our servo-hydraulic high-speed compressive test at quasi-static to medium strain rates (0.001 to 100 s^-1). Furthermore, the strain rate dependent energy absorption has been measured for hybrid specimens before and after aging, too.