This is a hypothetical menu of Roadster battery pack upgrades - please choose which would best meet your needs from the list above. Notes: HANDLING: reduces weight the most with new cells, down to original 56 kwh. RANGE: max range using same count of newer cells, with minor increase in weight. MID-KWH: half-way between Handling and Range choices, by kwh MID-WGT:half-way between Handling and Range cases, by weight ALL NEW DUPLICATE: uses same capacity cells as originals, but less expensive today than, say, 2008. Range has simple adjustments for kwh and weight. Cost is anchored on assumption of $40k for a pack with 6831 of "today's cells" (~$10k fixed for frame/bricks/sheets/drop&swap). Thanks to all for participating.