mainly car. for me, every little curve on the FW or the little flow conditioners on top of the side pods have more character than an individual driver.
back in the early era of F1, i'd say up until mid 90s, drivers could hassle a car to achieve that extra few tenths as the aero was still in it's infancy, but since early 2000s, driver's skills have become secondary. if i have to put a finger, i'd say since 2002, aero, chasis, electronics, engine and tires have surpassed the drivers in their importance.
of course, drivers are still interesting, they are the human element. but if we think about Equestrian as a sport, the influence of the rider is really much less important than the horse itself. these days, drivers rely on electronics to sort 80% of the driving, their main task is to use the human Traction control (i,e the foot ) and the brakes. but then agian, those too are also 'fly by wire' systems, with every human input going through several ECUs to make them smoother and more applicable. i'd even argue that the driver's only job now a days is to steer the damn car and avoid collisions , nothing else.
but coming back to the issue at hand, i read every technical changes in the F1.com website, try to read (and understand, though mostly in vain) all new updates each team tries to bring, and what's right or wrong. i'll love the sport until it becomes spec series (which it is becoming gradually ), and even then i'd still love it.